Schatt



Oct. 13, 1931. p CORNIBERT 1,827,385

PULL-THROUGH DRAWING FRAME FOR MEDIUM AND LONG FIBROUS MATERIAL,

MORE PARTICULARLY COMBED wooL, ARTIFICIAL SILK RAMIE Filed March 25,1930 preliminary 'draugh Patented Oct 13, 1931 UNITED STATES PEBBEGORRIBEET, OF

PATENT o g r rum, ITALY, assrenon} BY nEsNE 'assiemrnnrs, 'ro

s1. cmmnr'rannrx 'vonn. men. Henri/IAN, nxzrrnuensnrnsonar-r, or enem A.JOINT-STOCK comranr or GERMANY PULL-THROUGH nmwme rams FOB. MEDIUM ANDLONG Fnnions MATERIAL, norm rnnrrcunmr, connnn WOOL, nnrrrrcmn SILK,RAMIE Application. mm inch 25, 1930, Serial No. 438,797, and inGermanyApril 5, i929.

- The present invention relates to a pull through drawing frameforfibrousmaterial of medium and considerable length, more particularlycombed wool, s'chappe, artificial silk, ramie, of the type whereinthe-sliver or ribbonlis conveyed between the pair of feed rollers andthe pair of delivery or drawing.

rollers by an endless conveyer band running overlower drivenintermediate rollers.

Drawing frames having endless conveyer bands are known in which theconveyer band I is arranged between the feed rollersand the delivery ordrawing rollers and run' over drivenlower intermediate rollers. Theseknown drawing frames are not suitable for drawing'medium and longstaple. .Inone known construction, a pressure top roller is arrangedabove the conveyer band whereby a t is produced by the 'cooperation ofthe endless belt and pressure top roller on the one hand and the feedrollers on the other hand. limits the len h of the staple which can beefiectively t In another construction, the conveyer band.

merely serves the purpose of carrying the fibrous material from the rearpair of rollers to thefront pair of rollers without retaining thefloating fibres, and consequently. an even drawing action isunattainable.

According to the invention, there is arranged between the lower-.intermediate driven rollers which serve for guiding the conveyer band,at least one additional lower guide roller for the conveyerband,.twonongripping top rollers "comperating with the additionalintermediate lower roller. By this arrangement a very eflicient guidingof medium and long fibres is attained and a very efiicient slip-throughand retarding passage is produced; The sliver or' ribbon. to be drawn iscompelled to follow the curved path formed by the employment of the twointermediate top rollers and the intermediate lower roller, whichresults in an excellent'guiding of the floating fibres, aslanyaccidental gisgilacement of fibres is entirely avoidaccompanyingdrawing shdws by way 36 st am e a combustion embedying the pair ofdrawing rollers; a conveyer band artures of the invention indiagrammatic elevarollers d and f is provided an additional lowerintermediate roller e|for guiding the conveyer band; Opposite ,theroller 6 are arranged two upper non-gripping rollers g, g in such amanner as to format this point a curved or arc-shaped path, by which avery efi'ective retardation oi floating fibres. is. at: tained. J I 1'-All the top rollers 6 0 (P, f, g, g are guided by means of their pivotpins in grooves of bearing blocksh which are adjustable upon rods '5 andmay be fixed in the adjusted positions by means of set screws. Thebear-. ing blocks of the lower rollers b 1''? and e are adjustably andfixably mounted in a simer 0 of the pair of drawing or delivery roll-.

"ers is in usual manner loadedby means of a 1. A pull through drawingframe for drawing-medium and long staple, comprising in combination apairof feed rollers; a:

ranged between the said pair of feed rollers. and .said pair of drawingrollers; intermediate driven lower rollers for guiding and v driving thesaid conveyer band; non-grip ping toprollers co-operating with saidintermediate lower rollers; -anadditional lower roller'arranged betweenthe said intermediate lower rollers forguiding said conveyer band p andtwo non-grlpping top rollers arranged pp t y .011 both sides of the saidadditional 1 7 ilar manner in the frame a. The upper rolllower rollerand co-operating with the additional intermediate roller and theconveyer hand in forming a curved ath for the conve er band and thematerlal to be'drawn,

'su stantially as described.

2. A pullthrough drawin frame for drawing medium and long stap ecomprising in combination: aopair of feed rollers; a pair of drawingrollers; a conveyer band arranged between said pair of feed rollers andsaid pair of drawing rollers for guiding and conveying the material tobe drawn; inter mediate rollers for supporting the said conveyer band atthe ends; an additional lower roller arranged between the said.intermediate rollers for guiding the said conveyer band; and twonon-gripping top rollers arranfed oppositely and on both sides of thesai additional lower roller, said three last mentioned rollers being soarranged as to guide the'conveyer band and the material to e drawn in acurved path, substantially as described. 4

3. A .pull through drawing frame for drawing medium and long staple,comprising in combination: a pair of feed rollers; a pair of drawingrollers; a conveyer band arranged betweeu'said pair of feed rollersandsaid pair of drawing rollers; intermediate driven lower rollers forguiding and driving said conveyer jband; non-gri ping top rollersco-operating with said in ermediate lowerrollers and three additionalrollers arranged between the front and rear ends of the conveyingportion of the conveyer band in such ,a manner as to guide the saidconveyer band and the material to be drawn in a curved path around aportion of one of these three rollers, substantially as described.

sai

4. A pull through drawing frame for drawing medium and long staple,comprising in combination: a pair of feed rollers; a.

pair of drawing rollers; a conve 'er band ar ran ed between said pair offee rollers and pair of drawing rollers; intermediate driven lowerrollers for guiding and driving nee-nest the said conveyor band;non-gripping top rollers 'co-operating with said intermediate saidconvcyer band; non-gripping topirollers co-operating with saidintermediate lower rollers; an additional lower roller arrangedbetweenthe said intermediate lower rollers for guiding the said eonveyer band;and two non-gripping 'top' rollers arranged opipositely and. onfbothsides of the said a tional lower roller in such a manner as to hold thewhole portion of the conveyer band passing between the said twonon-gripping top rollers in contact with the said additional lowerroller, substantially as described.

5. A pull-through drawing frame for drawing medium and long; staple,compris ing in combination :7 a. pair. of feed rollers; a pair ofdrawing rollers; a conveyor band arranged between said pair of feedrollers and said pair of drawin driven lower rollers or guiding anddriving rollers; intermediate

